Bolster-hanger.



A. CHRISTIANSON.

BOLSTER HANGER.

APPLICATION FILED APR. 10. 1914.

Patented June 8, 1915. v

FIG.1

FIG. 2

' WITNEiSES ED STATES PA ANDREW CHRISTIANSON, OF BUTLER, PENNSYLVANIA, ASSIGNOR TO STANDARD MOTOR TRUCK COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

nonsrmnmena.

Specification of Letters Patent.

Patented June 8, 1915.

I Applicationfiled April 10, 1914. Serial No. 830,914.

ers; and I do hereby declare the following to be a full, clear, and ekact description thereof. 7

My invention relates to bolster-hangers for railway-trucks, and more especially motor-trucks employed on electric railways.

The object of myinvention is to provide a bolster-hanger which will act to dampen or check the end-swing of the bolster which when allowed to go uncontrolled, makes very uncomfortable riding for the passengers.

To these ends my" invention comprises, generally stated, bolster-hangers suspended from the transoms or cross-frame, and carrying curved bearing-blocks or shoes, and the spring supporting members having curved faces contacting with the curve faces of said blocks and resting thereon, whereby there is a friction 'set' up between these two faces which tends to check or retard the swing of the bolster supported on said hangers.

In the accompanying drawing, Figure 1 shows a portion of a truckframe with my improved bolster-hanger suspended therefrom, the lower portion of the bolsterhanger and the spring support being shown in section; Fig. 2 is a section taken at right angles of that shown in Fig. 1; Fig. 3 is an enlarged detail; Figs. 4 and 5 are views in modified form; and Fig. (i is another modified form of my invention.

In the drawing, I.have only illustrated the parts of a truck necessary to properly .portray myinvention, and accordingly the v V of metal bent to this shape. Supported on the lower cross-member 4 of the hanger is the shoe 5 which in this case may consist of a suitable casting, preferably of malleable iron, having the rounded or convex upperface 6, with the overhanging lug portions 7 which control the lateral movement of said shoe upon the lower cross-bar 4 I of the hanger. The spring-support 8 is riveted or otherwise secured to the spring-plank 9, and

said spring-support has'the curved concave face 10 which rests in contact with the convex curved face 6 of the shoe 5. The springs 11 rest upon the spring-support 8 and the bolster 12 rests upon said springs.

The end-swing of the bolster is checked by the frictional contact of the face 10 of the spring-support 8 with the curved face 6 of the shoe 5, and in this way I provide a very simple and eflicient means for guarding against the undue longitudinal swing of the bolster and the discomfort to the passengers occasioned thereby. The shoe 5 may be readily renewed from time to time and its withdrawal and insertion is a simple matter.

In Figs 3 and 4 I have illustrated a modified form of invention in which the hanger instead of being made of a single piece of metal bent to U-shape, is formed of the arms' 13 connected by means of the rod or bolt 14. A shoe 15 formed of spring-steel, or

other suitable material, is secured to the rod 14 by means of the rivets 16 passing through said rod. The spring-support lfi is formed with the curved recess 17 which enmember of the U-shaped hanger.

By my invention, I provide a simple and efficient form of damping device which is formed at the connection of the hangers with the spring-support, and am enabled to dispense with the damping plates and other devices of alike character which have been generally used heretofore for providing against undue longitudinal swing of the bolster.

' WhatI claim is:

1. The combina n of a bolster hanger, a

shoe supported th reby having a convexfrictional face, and a spring-support having a concave frictional face engaging said first named frictional face.

2. The combination of a bolster-hanger, a In testimony vvhereof, I the said ANDREW shoe resting on the .cross member of said CHRISTIANSON have hereunto set my hand.

hanger having anoverhanging portion said shoe having a convex frictional face, and a ANDREW CHRISTIAN 5 spring-support having a concave frictional Witnesses:

' face engaging said first named frictional BERTHA E. Hnme,

face. JOHN F. WILL. 

